LEAKAGE POSITION CALCULATION DEVICE, LEAKAGE POSITION CALCULATION METHOD, COMPUTER-READABLE RECORDING MEDIUM, VIBRATION CALCULATION DEVICE, AND COMPUTATION DEVICE

WIPO Patent Application WO/2015/068343

A1

The present invention reduces the production costs associated with a device that detects a leakage position in a pipe using detection results from a plurality of vibration detection devices. Provided is a leakage position calculation device in which a first time difference calculation unit (114) calculates the time difference (Δt1) between the detection timing of vibration that indicates a first vibration mode of a pipe (P) and the detection timing of vibration that indicates a second vibration mode of the pipe (P) by processing the measurement result of a first vibration detection unit (112). A second time difference calculation unit (124) calculates the time difference (Δt2) between the detection timing of vibration that indicates the first vibration mode of the pipe (P) and the detection timing of vibration that represents the second vibration mode of the pipe (P) by processing the measurement result of a second vibration detection unit (122). A leakage position calculation unit (130) then uses the time differences (Δt1) and (Δt2) and the interval (I) between the first vibration detection unit (112) and the first time difference calculation unit (114) to calculate a leakage position in the pipe (P).

TAKATA SOICHIRO (JP)
KASAI SHIGERU (JP)

PCT/JP2014/005312

May 14, 2015

October 20, 2014

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NEC CORP (JP)

G01M3/24

JPS62130333A	1987-06-12
JPH10281921A	1998-10-23
JP2013217864A	2013-10-24
JP2006003311A	2006-01-05

SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)

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